Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (6): 121-126.doi: 10.3969/j.issn.1000-565X.2013.06.019

• Materials Science & Technology • Previous Articles     Next Articles

Amino-Functionalized Montmorillonite Modified via Mortar Grinding

Chen Yong- jun1 Luo Yuan- fang1 Li Bin1 Lü Wei- xi1 Jia Zhi- xin1 Jia De- min1 He Yan- ling2 Zhang Xiu- qin2   

  1. 1.School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Polyrocks Chemical Co.,Ltd.,Qingyuan 511517,Guangdong,China
  • Received:2012-09-26 Revised:2012-12-07 Online:2013-06-25 Published:2013-05-03
  • Contact: 贾志欣(1980-)，男，博士，副研究员，主要从事高分子材料合成、制备与改性研究． E-mail:zxjia@scut.edu.cn
  • About author:陈勇军(1977-)，男，博士生，工程师，主要从事高分子材料合成、制备与改性研究．E-mail:yjchen@scut．edu．cn
  • Supported by:

    NSFC- 广东省人民政府联合基金资助项目 ( U1134005); 广东省战略性新兴产业核心技术攻关项目(2012A090100017);广东省教育部产学研结合重大项目(2011A090200051);华南理工大学中央高校基本科研业务费专项资金资助项目(2012ZMO009)

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Abstract:

Organically modified montmorillonite was prepared respectively via mortar grinding,solution stirring and microwave heating,with sodium montmorillonite as the matrix and with γ- aminopropyl triethoxysilane (KH- 550) as the modifying agent.Then,the samples before and after the modification were characterized and analyzed by means of FT- IR,XRD,TG,SEM and UV- Vis.The results show that (1) the mortar grinding method helps to realize the intercalation modification of the amino compound of montmorillonite and is more effective than the solution stirring method and the microwave heating method; (2) after the modification via mortar grinding,the (001) interlayer spacing of sodium montmorillonite improves from 1.07nm to 2.42nm; (3) the organic load rate of organic montmo-rillonite prepared via mortar grinding is the highest and the mass loss of montmorillonite at 700 ℃ is up to 16%;and (4) mortar grinding helps to prepare modified montmorillonite with uniform dispersion and strong stability in organic solvents.

Key words: sodium montmorillonite, γ- aminopropyl triethoxysilane, organically modified montmorillonite, mortar grinding method, solution stirring method, microwave heating method

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